body {
  font-family: Helvetica, Arial, sans-serif;
}

img {
  display: block;
  width: 100%;
}

.btn {
  display: inline-block;
  padding: 10px 15px;
  border-radius: 5px;
  background: #f50;
  border: none;
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  margin: 5px;
  transition: background ease-in-out .15s;

  &:hover {
    background: darken(#f50, 15%);
  }
}

.node {
  .columns {
    display: flex;
    justify-content: stretch;
    align-items: flex-start;
    
    & > * {
      width: 100%;
      flex: 0 1 auto;
    }
  }
}
